[
    { "name": "template_id", "type": "select", "label": "Template", "required": true, "options": "rpc://templateList" },
    {
        "name": "variables",
        "type": "array",
        "label": "Variables",
        "help": "Placeholder values, for example first_name = Sam.",
        "spec": [
            { "name": "key", "type": "text", "label": "Field key", "required": true },
            { "name": "value", "type": "text", "label": "Value" }
        ]
    }
]